spc-pleroma/lib/pleroma/web/activity_pub/mrf/subchain_policy.ex

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.ActivityPub.MRF.SubchainPolicy do
alias Pleroma.Config
alias Pleroma.Web.ActivityPub.MRF
require Logger
@behaviour MRF
defp lookup_subchain(actor) do
with matches <- Config.get([:mrf_subchain, :match_actor]),
{match, subchain} <- Enum.find(matches, fn {k, _v} -> String.match?(actor, k) end) do
{:ok, match, subchain}
else
_e -> {:error, :notfound}
end
end
@impl true
def filter(%{"actor" => actor} = message) do
with {:ok, match, subchain} <- lookup_subchain(actor) do
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Logger.debug(
"[SubchainPolicy] Matched #{actor} against #{inspect(match)} with subchain #{
inspect(subchain)
}"
)
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subchain
|> MRF.filter(message)
else
_e -> {:ok, message}
end
end
@impl true
def filter(message), do: {:ok, message}
@impl true
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def describe, do: {:ok, %{}}
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end